Closure



Dec. 23, 1952 J PlNDER 2,622,759

CLOSURE Filed Dec. 6. 1947 INVENTOR. JACK PERCY Pl NDER BY H/S ATTORNEYS Patented Dec. 23, 1952 UNITED STATES PATENT OFFICE CLOSURE Jack Percy Pinder, Wemblcy, England Application December 6, 1947, Serial No. 790,181 In Great Britain December 6, 1946 '7 Claims. 1

This invention relates to a cap for closing an orifice in a screwthreaded neck, and in particular to a cap for closing the orifice in the neck of a collapsible tube.

According to this invention a cap for closing an orifice in a screwthreaded neck comprises a cover adapted to extend across the orifice, a wire ring adapted to engage the screwthreads on the neck, and interengaging means on the two portions for connecting the two portions together, the cover having a projection adapted to engage said. wire ring to facilitate rotation of said cover relatively to the neck, the interengaging means being such that when said projection is in engagement, rotation of the cover causes rotation of the wire ring on the screwthreads on the neck to raise or lower the wire ring, whereas when said projection is out of engagement the cover may be moved relatively to the wire ring to uncover the orifice.

The said projection may be a skirt on the cover adapted to embrace the neck, or it may be a depending locking pin, if desired hooked, which is adapted to engage a lateral projection on the wire ring, which may also be hooked.

The interengaging means may comprise a headed pin depending from the cover and passing through an opening in the wire ring or in an extension thereof.

The invention is mainly concerned with collapsible tubes, but is also applicable to any article having a screwthreaded neck containing an orifice which is to be covered by a cap, as for example bottles, cans, or petrol tanks of motor cars, and the like.

The invention will now be described with reference to the accompanying drawings in which two embodiments of the invention are shown by way of example.

Figure 1 is an elevation, partly in section, of the neck of a container with one embodiment of cap according to the invention in position thereon,

Figure 2 is an elevation viewed from the left of Figure 1,

Figure 3 is an underside plan of the cap of Figure 1 with the neck omitted, and

Figure 4 is an elevation, partly in section, of a neck with a second embodiment of cap in position thereon.

The drawings disclose a cap for closing an orifice in a screwthreaded neck i, such as the neck of a collapsible tube, comprising a cover 2 adapted to extend across the orifice, and having a pair of spaced pins 4 and 9 fixed in the underside of said cover and depending therefrom a distance not greater than the distance to the lowest grooves of screwthreaded neck and having stop means at the free end of said pins, in combination with a split ring 3 of wire having a diameter receivable in the groove between the threads of the screw, and having means such as the hook IE! at one end of the wire ring adapted to engage the stop on one of said pins, for example pin 9, and means such as the loop 1 on the ring spaced from said end to receive the other pin A above its stop, whereby rotation of the cap causes the ring to travel along the screw, and the cover 2 is held in position on the neck when the ring is screwed down on the neck.

- Referring first to Figures 1 to 3, an externally screwthreaded neck I, for example of a collapsible tube, is provided with a cap comprising a cover 2 and a wire ring 3 connected together by a headed pin 4. The cover 2 is adapted to extend across the orifice in the neck I, and has a skirt 5 which is adapted to embrace the neck l. A resilient packing ti may be provided between the cover 2 and the neck i. The ring 3 is a split ring of wire adapted to engage in the screwthreads on the neck I and is provided with an extension in the form of a loop I through which passes the headed pin The cover 2 is provided with six protuberances 8 to facilitate rotation thereof, and the headed pin a is secured to one of these protuberances 8.

The protuberance 8 diametrically opposite to the protuberance 8 carrying the headed pin 4 carries a hooked pin 9 adapted to engage under a hooked lateral projection [ii on the ring 3. In the position shown in Figures 1 and 2, the ring holds the cover 2 tightly on the neck I by means of the headed pin 4 and the hooked pin 9. When the cover 2 is rotated in one direction it causes the ring 3 to move upwardly traveling along the groves of the screw thread. If desired the rotation can be continued until the entire cap is removed from the neck. If preferred, the rotation can be stopped when the lower edge of the skirt 5 is above the top of the neck i; the engagement between the stop means or hook on pin 8 and on the free end of ring 3 can be released by pressing their ends away from each other, and the cover 2 can be swung to a position in which the orifice is unobstructed but in which the cover 2 is held captive on the neck by the stop means or head of pin 4, which is engaged by the loop I of ring 3.

To apply the cap to the neck I, the ring 3 is screwed or sprung into the groove of the screw thread on the neck I, the cover 2 is swung round until the hooked pin 9 engages the hooked lateral projection IE! and the cover 2 is then rotated downwardly. This causes rotation of the ring 3, whereby the ring 3 is screwed onto the neck I until the position shown in Figure 1 is reached.

One of the advantages of this invention is that it is not necessary to provide screw threads in the cover of the cap.

Referring to Figure 4, this shows an embodiment which is similar to that shown in Figures 1 to 3 except that the skirt 5 of the cover 2 is dispensed with. With this embodiment only slight rotation of the cover 2 is needed to screw on or unscrew the cap.

What I claim is:

1. A cap for closing an orifice in a screwthreaded neck, such as the neck of a collapsible tube, comprising a cover adapted to extend across the orifice, and having a pair of spaced pins fixed in the underside of said cover and depending therefrom a distance not greater than the distance to the lowest groove of the-screw-threaded neck and having stop means at the free end of said pins, in combination with a ring of wire having a diameter receivable in the groove between the threads of the screw, andhaving spaced means on the ring adapted to cooperate with the stops on said pins, whereby rotation of the cap causes the ring to travel along the screw, and the cover is held in position on the neck when the ring is screwed down on the neck.

2. A cap as claimed in claim 1 wherein the cover has a skirt thereon adapted to embrace the neck.

3. A cap as claimed in claim 1 wherein the coverhas a protuberance from its side and wherein a pin connecting the cover to the ring is carried in said protuberance.

4. A cap as claimed in claim 1 wherein the cap has a pair of diametrically opposite protuberances carrying the pins connecting the cover to the ring.

5. A cap as claimed in claim 1 wherein one of the means on the ring cooperating with the stop on a pin, comprises an extension of the ring in the form of a loop.

6. A cap for closing an orifice in a screwthreaded neck, such as the neck of a collapsible tube, comprising a cover adapted to extend across the orifice, and having a pair of spaced pins fixed in the underside of said cover and depending therefrom a distance not greater than the distance to the lowest groove of the screw-threaded neck and having stop means at the free end of said pins, in combination with a split ring of wire having a diameter receivable in the groove between the threads of the screw, and having means at one end of the wire ring adapted to engage the stop on one of said pins and means on the ring spaced from said end to receive the other pin above its stop, whereby rotation of the cap causes the ring to travel along the screw, and the cover is held in position on the neck when the ring is screwed down on the neck.

7. A cap for closing an orifice in a screwthreaded neck, such as the neck of a collapsible tube, comprising a cover adapted to extend across the orifice, and having a pair of spaced pins fixed in and depending from said cover a distance not greater than the distance to the lowest groove of the screw-threaded neck and having stop means at the free end of said pins, in combination with a split ring of Wire having a diameter receivable in the groove between the threads of the screw, and having a hook at one end of the ring adapted to'engage the stop on one of said pins and an extension cf the ring in the form of a loop spaced from said end to receive the other pin above its stop, whereby rotation of the cap causes the ring to travel along the screw, and upon disengaging the hook from the stop on one pin, and rotating the other pin in the loop, the cover may be pivoted around the other pin until the orifice in the neck is unobstructed.

JACK PERCY FINDER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,581,818 Sheifield Apr. 20, 1926 1,644,697 Tornsjo Oct. 11, 1927 1,806,364 Newman May 19, 1931 1,942,214 Knudson Jan. 2, 1934 2,170,758 Lehwald Aug. 22, 1939 

